Re: [Xen-devel] Next Xen ARM community call - Wednesday 2nd August 2017

[Mirela Simonovic <mirela.simonovic@xxxxxxxxxx>]

Hi Stefano,

Thank you, we're looking into this.

Regards,

Mirela

On Wed, Aug 2, 2017 at 8:25 PM, Stefano Stabellini <sstabellini@xxxxxxxxxx> wrote:

Hi everybody,

the Xen based suspend notification interface is implemented in Linux by
drivers/xen/manage.c. The guest monitors a node on xenstore named
"control/shutdown", one of the possible commands is "suspend".

See the corresponding libxl__domain_pvcontrol_* functions and their
callers under tools/libxl. You can see that libxl is able to detect if
the PV protocol is supported by the guest calling
libxl__domain_pvcontrol_available, although the detection wouldn't work
today for ARM guests.

You might also want to give a look at drivers/xen/cpu_hotplug.c (also in
Linux) which is the implementation of the PV cpu hotplug protocol.
See libxl__set_vcpuonline_xenstore in tools/libxl/libxl_domain.c.

I am sorry this protocol is not properly documented anywhere (as far as
I am aware). However, it is so simple that you should be able to
understand how it works just from the code.

On Wed, 2 Aug 2017, Mirela Simonovic wrote:
> Hi,
> Thanks for the invite, please find the presentationhere: https://docs.google.com/presentation/d/1PhK9bdLyY_DSr8RbSs7LDdLWADbSW7YGwwnkpMLWeQ
> g/edit#slide=id.g24c05965d7_0_15
>
> Regards,
> Mirela
>
> On Tue, Aug 1, 2017 at 7:43 PM, Stefano Stabellini <sstabellini@xxxxxxxxxx> wrote:
>       On Tue, 1 Aug 2017, Julien Grall wrote:
>       > On 01/08/17 17:44, Edgar E. Iglesias wrote:
>       > > On Wed, Jul 26, 2017 at 04:59:43PM +0100, Julien Grall wrote:
>       > > > Hi all,
>       > > >
>       > > > The next Xen ARM community call will be Wednesday 2nd August 2017 5pm
>       BST.
>       > > >
>       > > > Do you have any specific topic you would like to discuss?
>       > >
>       > > CC: Davorin and Mirella from Aggios
>       > >
>       > > Hi Julien,
>       >
>       > Hi,
>       >
>       > > I was talking with the Aggios folks today and they were wondering if
>       > > it's possible to share screens to present slides during the call?
>       > > I'm guessing not, since the info below only has dial in info.
>       >
>       > It sounds like it is possible to share screen but I can't find a public
>       link
>       > for it :/.
>       >
>       > I can look for an alternative (I have plenty of choice at Arm :)) if it is
>       > something people wants to do in the future. But for tomorrow, it might be
>       > difficult to get something up by tomorrow.
>       >
>       > Can you upload the slides somewhere and send a link by e-mail?
>
>       Sending the slides by email beforehand is always a good idea. However,
>       it's 2017 and we *have* to be able to share slides live during a meeting
>       :-)
>
>       I talked with Julien: we are going to use my uberconference details for
>       the call, which supports dialing in by phone, from your PC and slide
>       sharing:
>
>
>       Join the call: https://www.uberconference.com/stefano-stabellini
>       US dial-in number: 669-999-0613
>       No PIN needed
>
>       For the international numbers, go to
>       https://www.uberconference.com/stefano-stabellini and choose "Join by
>       Phone", a list of international numbers and a pin will be provided.
>
>       I'll also send another reminder tomorrow.
>
>
>       Cheers,
>
>       Stefano
>
>
>
>

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